20711-78-8 7-Oxabicyclo(2.2.1)heptane-2,3-dicarboximide, N-(o-methylphenyl)-, exo-(Z)- 7-Oxabicyclo(2.2.1)heptane-2,3-dicarboximide, N-(o-tolyl)-, exo-(Z)- exo,cis-N-(o-Tolyl)-7-oxabicyclo(2.2.1)heptane-2,3-dicarboximide